Web MiniDisc (Pro) is built using netmd-js (a port of the earlier linux-minidisc project to TypeScript), React, and WebUSB.
Cybercase (Stefano Brilli) developed the original version. The current Web MiniDisc Pro fork is developed by asivery with help from numerous others. The MiniDisc Wiki hosts Web MiniDisc Pro using Azure Blob Storage and GitHub Actions.
Newer, undocumented features are provided using the netmd-exploits library.